[gradsusr] draw poly

[Stephen McMillan]

Jeff,

It's actually pretty simple.  Just substitute "line" for "polyf" in the
command.  For example:

'draw polyf x1 y1 x2 y2 x3 y3 x4 y4 x1 y1' will draw a filled polygon
'draw line x1 y1 x2 y2 x3 y3 x4 y4 x1 y1' will draw an unfilled polygon

You control the line color same as for polyf.  If you want to draw a filled
polygon with a border of different color, then just do the 'draw polyf...'
followed by the 'draw line...' but with a different color.

Hope this helps.
Stephen McMillan



On Thu, Mar 1, 2018 at 5:49 PM, Jeff Duda <jeffduda319 at gmail.com> wrote:

> I guess. I was just hoping there was a built-in function to do this so
> that I wouldn't have to iterate 'draw line' n times just to draw an
> unfilled n-gon. There are 'draw rec' and 'draw recf' functions, so I
> figured it would make sense if there was a 'draw poly' function to
> correspond to 'draw polyf' in the same manner. Thank you for the response,
> though.
>
> Jeff
>
> On Thu, Mar 1, 2018 at 3:31 PM, David Nielsen <davidnielsen at id.uff.br>
> wrote:
>
>> Jeff,
>>
>> You can make a function like the following to draw lines to make a
>> polygon. In this case, (ir)regular 4-side polygons. Is this what you meant?
>>
>>
>> ******************* This funtion draws a box
>> * Usage:
>> * ddbox lat1 lat2 lat3 lat4 lon1 lon2 lon3 lon4
>>
>> function ddbox(arg)
>>
>> lat1=subwrd(arg,1)
>> lat2=subwrd(arg,2)
>> lat3=subwrd(arg,3)
>> lat4=subwrd(arg,4)
>> lon1=subwrd(arg,5)
>> lon2=subwrd(arg,6)
>> lon3=subwrd(arg,7)
>> lon4=subwrd(arg,8)
>>
>> 'set line 1 1 12'
>>
>> 'q w2xy 'lon1' 'lat1
>> x1=subwrd(result,3)
>> y1=subwrd(result,6)
>>
>> 'q w2xy 'lon2' 'lat2
>> x2=subwrd(result,3)
>> y2=subwrd(result,6)
>>
>> 'q w2xy 'lon3' 'lat3
>> x3=subwrd(result,3)
>> y3=subwrd(result,6)
>>
>> 'q w2xy 'lon4' 'lat4
>> x4=subwrd(result,3)
>> y4=subwrd(result,6)
>>
>> 'draw line 'x1' 'y1' 'x2' 'y2
>> 'draw line 'x2' 'y2' 'x3' 'y3
>> 'draw line 'x3' 'y3' 'x4' 'y4
>> 'draw line 'x4' 'y4' 'x1' 'y1
>>
>> return
>>
>>
>>
>> 2018-03-01 19:13 GMT-03:00 Jeff Duda <jeffduda319 at gmail.com>:
>>
>>> Is there a version of the draw polyf function to draw an unfilled
>>> polygon?
>>>
>>> Jeff Duda
>>>
>>> --
>>> Jeff Duda, Research Scientist
>>>
>>> University of Colorado Boulder
>>>
>>> Cooperative Institute for Research in Environmental Sciences
>>>
>>> NOAA/OAR/ESRL/Global Systems Division
>>> Boulder, CO
>>>
>>> _______________________________________________
>>> gradsusr mailing list
>>> gradsusr at gradsusr.org
>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>
>>>
>>
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>>
>
>
> --
> Jeff Duda, Research Scientist
>
> University of Colorado Boulder
>
> Cooperative Institute for Research in Environmental Sciences
>
> NOAA/OAR/ESRL/Global Systems Division
> Boulder, CO
>
> _______________________________________________
> gradsusr mailing list
> gradsusr at gradsusr.org
> http://gradsusr.org/mailman/listinfo/gradsusr
>
>
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